Automatic train stop or signal



April 20, 1926.

. B. G. VAN 'DYKE, JR

AUTOMATIC TRAIN STOP OR SIGNAL Filed Feb. 19', 1925 2 sheets-sheet 1 INV'Z'NTOR Jr y Ben a/p wo April 20 1926.

B. G. VAN DYKE, JR AUTOMATIC TRAIN STOP 0R SIGNAL Filed Feb. 19, 1925 2 Sheets-Sheet 2 GlmpykcJ; I

INVZNTOR rgiww'n an mn The magnet circuit is normally maintained open by a signal circuit which includes an clectromagnet 32 associated with the armature 28 for normally holding said armature out of engagement with the contact 29, a

conductor 33 leading from the electromagnet 32 to track circuit wire 34, which may include a part of a track rail, a conductor 35 leading from the electromagnet 32 to track circuit wire 36 for completing the circuit.

It is to be understood that there re two sets of track magnets, caution and stop, a set adjacent each track rail, preferably on the outside thereof and also two sets of armatures one on each side of the railway vehicle as illustrated in Figs. 2 and 3 wherein 103 represents the track magnets for producing the caution signals and one ofthese caution track magnets is along side the track of each block said blocks being represented by the reference letters A, B and C.

The electromagnets 103 of the second trackside circuit are for cooperation with the armature 104 of the Vehicle circuit shown at the left-hand side of Fig. 3 which is the same as the other vehicle circuit above described and illustrated at the right-hand side of Fig. 3 in addition to the showing in Fig. 1. The armature 104 is pivoted at 105 and normally moved in one direction by a spring 106 to engage a contact 107.

A movable element 114 of a signal or the like within the vehicle, preferably adjacent the movable element 14, is associated with an eleetromagnet 115 to be energized from a source of electrical energy 116 and in addition to the magnet 115 and electrical source 116, the operating circuit includes conductors 117 and 118, an armature 119, a contact 120 and a conductor 121 leading from said contact 120 to the magnet 115. The operating circuit referred to is completed upon the breaking of the vehicle circuit which in addition to the armature 104 and source of electrical energy 116 includes conductors 122 and 123, the electromagnet 124 and conductor 125.

The vehicle circuit is broken by the op eration of the armature 104 which is drawn away from .the contact 107 when a track magnet 103 in a second trackside circuit is energized, which second trackside circuit includes a conductor made up of a wire 126, a portion of a track rail and a wire 226 connecting one side of the caution magnet 103 with one side of a battery 31 in the first trac side circuit through the con ductor 26, armature 28, contact 29 and conductor 30, while the other side of the caution magnet 103 connected by a conductor 127 with the other side of the battery 31, as through a portion of conductor 27.

From the foregoing description it will be obvious that when a vehicle, conventionally represented at 100 is in block C the track battery 101 in said block will be short circuited thereby causing the armature 23 in the first traclrside circuit to drop and engage the contact 29 so as to close both the primary and second traclrside circuits through the battery 31 thus energizing the stop magnet'3 in block 13 and the cantion magnet 103 in block A while all of the other track magnets will be unaffected. A train proceeding through block A will have its armature 104 acted upon by the magnet 103 so as to open the vehicle circuit and close the signal circuit whereby the magnet 115 will be energized and operate the movable element 114 of the signal thereby giving the caution signal to the operator of the train.

As the train proceeds into block B the armature 4 will be actuated by the magnet 3 to open the vehicle circuit and close the stop signal circuit which includes magnet 15 so as to actuate the movable element 14 which may be a part of a stop signal or the brake system to that the operator will be given the stop signal or the brakes applied or both.

Although I have shown the most simple way to accomplish the desired object I do not wish to be limited in any way thereto as manychanges and modifications might be made without departing from the scope of the invention and all such changes are contemplated by me and are considered within the purview of the appended claims.

Having thus fully described my invention, what I claim as new and useful is 1. An automatic train stop or signal comprising an electrical circuit controlled by the operation of a track circuit, another electrical circuit including an electromagnet, means in said electrical circuits whereby the opening of the first circuit will close the second circuit, a railway vehicle, an electrical circuit in said vehicle, said last mentioned circuit including means actuated by the electromagnet in the second named circuit to open said vehicle circuit, an operating circuit including parts of the vehicle circuit, means in the last two circuits where by the operating circuit will be closed upon the opening of the vehicle circuit, a movable member and means in the operating circuit to actuate said movablemember when said operating circuit is closed.

2. The combination with a railway track and a railway vehicle of an electromagnet located adjacent the track, guards protecting said electromagnet, an electric circuit including said magnet, a source of electrical energy and the armature of a relay, another electric circuit including the magnet of said relay, a source of electrical energy derived from a trackcircuit to energize the relay and open the first named circuit, the operation of the track circuit breaking the circuit through the relay and closing the circuit through the electromagnet to energize the latter, an armature on the railway vehicle, guards to protect said armature, a third electric circuit including said second armature, a battery and the magnet of another relay, means to normally hold said armature in a position for closing said third circuit, a fourth electric circuit including the battery of the last named circuit, the armature of the lastnamed relay, and a magnet whereby the energizing of the electromagnet will actuate the armature on the magnet, and means controlled by said last named magnet to operate a signal.

In testimony whereof, I have hereunto afiixed my signature.

BENJAMIN G. VAN DYKE, JR. 

